Set a help domain and path for the this.
This function registers user documentation for the calling plug-in with the GIMP help system. The domain_uri parameter
points to the root directory where the plug-in help is installed. For each supported language there should be a file called
'gimp-help.xml' that maps the help IDs to the actual help files.
This function can only be called in the [vfunc@PlugIn.query_procedures] function of a plug-in.
| this |
A PlugIn. |
| domain_name |
The XML namespace of the plug-in's help pages. |
| domain_uri |
The root URI of the plug-in's help pages. |